Counting Atoms

Flashcard
•
Chemistry
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are reactants in a chemical equation?
Back
Reactants are the substances that undergo a chemical change in a reaction, found on the left side of the equation.
2.
FLASHCARD QUESTION
Front
In the equation 2H₂ + O₂ → 2H₂O, what are the reactants?
Back
2H₂ + O₂
3.
FLASHCARD QUESTION
Front
How many oxygen atoms are in Al₂(SO₄)₃?
Back
12
4.
FLASHCARD QUESTION
Front
How many oxygen atoms are in H₂O?
Back
1
5.
FLASHCARD QUESTION
Front
How many hydrogen atoms are in 4H₂O?
Back
8
6.
FLASHCARD QUESTION
Front
What is the total number of atoms in H₂SO₄?
Back
7
7.
FLASHCARD QUESTION
Front
What is the coefficient in a chemical equation?
Back
A coefficient is a number placed in front of a chemical formula to indicate how many molecules or atoms are involved in the reaction.
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